340067343521 has 2 divisors, whose sum is σ = 340067343522. Its totient is φ = 340067343520.

The previous prime is 340067343361. The next prime is 340067343527. The reversal of 340067343521 is 125343760043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331158815296 + 8908528225 = 575464^2 + 94385^2 .

It is a cyclic number.

It is not a de Polignac number, because 340067343521 - 2¹⁴ = 340067327137 is a prime.

It is not a weakly prime, because it can be changed into another prime (340067343527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170033671760 + 170033671761.

It is an arithmetic number, because the mean of its divisors is an integer number (170033671761).

Almost surely, 2^340067343521 is an apocalyptic number.

It is an amenable number.

340067343521 is a deficient number, since it is larger than the sum of its proper divisors (1).

340067343521 is an equidigital number, since it uses as much as digits as its factorization.

340067343521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 38.

The spelling of 340067343521 in words is "three hundred forty billion, sixty-seven million, three hundred forty-three thousand, five hundred twenty-one".